Vietnamese Boat Noodle Soup with Beef

Steps

1. 1

   Blanch and rinse meat

   • Bring a large pot of water to a boil.
   • Add beef shank chunks and pork offal.
   • Let them boil for 2 minutes, then drain in a colander and rinse under cold running water until the water runs clear.
   • This removes impurities and surface foam, resulting in a cleaner broth.
   • Pat dry on a clean kitchen towel.

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   Ready when: Water boils and meat is briefly submerged; drain when water reaches a boil

   Tip: This extra step prevents a cloudy or murky broth—essential for boat noodle soup's clarity and appeal.

2. 2

   Char the onion and aromatics

   • Heat a large dry skillet over high heat for 1 minute.
   • Place the halved onion, cut-side down, directly on the hot surface and char without moving for 3–4 minutes until the flesh is blackened and softened.
   • Remove and set aside.
   • This caramelization adds deep, roasted sweetness to the broth.

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   Ready when: Onion cut-sides are deeply charred and flesh is soft when pressed

   Tip: Don't move the onion while charring—you want heavy contact heat for proper blackening, not stirring.

3. 3

   Start the broth base

   • Pour 8 cups (1,900 ml) water into a large heavy-bottomed pot (6-quart or larger) and bring to a boil over high heat.
   • Add the blanched beef shank and pork offal, along with the charred onion halves (skin and all), smashed ginger, and smashed garlic.
   • Add star anise pods, cinnamon stick, and whole cloves.
   • Stir once and bring back to a boil, then reduce heat to low and simmer uncovered.

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   Ready when: Broth reaches a rolling boil; skim any foam that rises

   Tip: Skim foam off the surface as it rises in the first few minutes—this keeps the broth clear and clean-tasting.

4. 4

   Simmer for depth

   • Reduce heat to low so the broth simmers gently with only occasional bubbles breaking the surface.
   • Simmer uncovered for 45 minutes.
   • During this time, the beef and pork will infuse the broth with rich umami and the spices will bloom.
   • Skim any foam or fat that rises to the surface in the first 10 minutes.
   • By the end of simmering, the pork offal should reach an internal temperature of 145°F (63°C) for food safety.

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   Ready when: Beef is very tender and flakes easily with a fork; broth is fragrant and golden; pork offal registers 145°F (63°C) on an instant-read thermometer

   Tip: Keep the heat truly low—a vigorous boil will cloud the broth and toughen the meat. Gentle bubbling is ideal.

5. 5

   Add fermented soybean and seasonings

   • After 45 minutes, add fermented soybean paste (3 tbsp / 45 g), soy sauce (3 tbsp / 45 ml), fish sauce (2 tbsp / 30 ml), and dried chili powder (1 tbsp / 7 g).
   • Stir well to dissolve the paste completely.
   • If using fresh red chilies, add them now, whole or halved.
   • Taste the broth and adjust with a pinch of salt if needed—it should be savory, slightly spicy, and complex.

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   Ready when: Fermented paste is fully dissolved and broth is well-blended

   Tip: Fermented soybean paste can clump; stir it in slowly and break it up with the back of a spoon to ensure even distribution.

6. 6

   Add pork blood and final proteins (optional)

   • If using pork blood cake, carefully lower the sliced pieces into the simmering broth.
   • They will sink, then slowly rise as they cook.
   • Let them simmer for 5–7 minutes until they are warmed through and reach an internal temperature of 145°F (63°C) for food safety.
   • If adding fish balls or beef balls, add them now as well—they only need 3–4 minutes to heat through.
   • Keep the broth at a gentle simmer.
   • If using pork belly or ribs, add them now and simmer for 8–10 minutes until they reach an internal temperature of 145°F (63°C).

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   Ready when: Pork blood pieces are firm and pale, registering 145°F (63°C) internally; pork belly is tender and cooked through at 145°F (63°C); balls are heated through

   Tip: Do not let pork blood cake boil hard or it will fall apart. Use an instant-read thermometer to verify all pork reaches 145°F (63°C) for food safety; a gentle simmer keeps it intact and tender.

7. 7

   Prepare noodles for serving

   • Bring a separate large pot of water to a boil.
   • Place the drained soaked rice vermicelli into a sieve or fine-mesh strainer.
   • Carefully lower the strainer into the boiling water for 1–2 minutes, stirring gently with chopsticks or a fork to separate the strands.
   • The noodles should be tender but still slightly firm.
   • Drain well and divide equally among four serving bowls.

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   Ready when: Noodles are tender, separated, and no longer stick together

   Tip: Soaking the noodles 15 minutes ahead softens them so they cook faster and don't turn mushy—1–2 minutes in boiling water is enough.

8. 8

   Assemble and serve

   • Ladle the hot broth with meat and blood cake over the noodles in each bowl (about 1½ cups / 360 ml broth and solids per bowl).
   • Top each bowl with a handful of chopped cilantro and sliced scallions.
   • Serve immediately with lime wedges on the side so diners can squeeze juice into their bowls to taste, and pass any remaining chili powder or fresh chilies for those who want extra heat.

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   Ready when: Broth steams, noodles are hot, and garnish is vibrant

   Tip: Work quickly when assembling so the noodles stay hot. Have all garnishes prepped and ready before you begin ladling broth.